I Don't Want to Get Hurt, So I'll Max Out My Defense Novel

Blessed with a stat system, one cultivator makes a single choice: maximize defense above all else. Fearful of suffering, they immerse themselves in lava, rest within Ancient Killing Formations, and traverse dimensional realms piloting armored behemoths. Armed with a Gundam Sentinel, they strike down immortals alongside Godzilla-tier power. The Daluo Golden Immortals of rival worlds grow obsessed, gathering daily to devise techniques capable of piercing this seemingly impenetrable defense. Each ultimate technique they unleash proves futile against an enemy who refuses to be wounded. What drives these fierce cultivators to break through an already unbreakable wall?